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v2 shetsgsheem. C. P. F. CLERC & A, G. PINGAIILT.v

ELECTRIC ACGUMULATOR.

Patented Deo. 21,1897.

v Inl/Brnn., 77 C2i-fera? (No ModelJ es Wfl/ THE NOHRIS PETERS CO, FNmn-LITHO.. WASHINGTON. D. C.

wness Z l 2 Sheets'Slh-eet 2. C. P. F. CLERC 8L A. GfPINGULT.

(No Model.)

- ELECTRIC AGGUMULATOR.

' Patented.nee. 21,1897.

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PARIS,

PATENT ACLOVISIIERRE FRANCIS CLERC AND ADOLPHE GEORGES PINGAUL'F, CF

FRANCE.

SPECIFICATION forming part of Letters Patent No. 595,695, dated December 21, 1897. Application filed December 5, 1896. Serial No. 614,535. (No model.) Patented in Belgium August 8, 1396,1To. 122,957.

To a/ZZ whom t may concern:

Beit known that we, CLovIs PIERRE FRAN- CIS CLERC, gentleman, residing at 28 Ruek Grange Bateliere, and ADOLPHE GEORGES PINGAULT, electrician, residing at 98 Rue du Chemin-Vert, Paris, France, citizens of the Republic of France, have invented certain new and useful Improvements in Electric Accumulators, (for which We have obtained Letters Patentrof Belgium, No. 122,957, dated August 8, 1896,) of which the following is a specification.

Our invention relates to improvements in the construction of electrical'accumulators, and especially of those intended for propelling cycles of all kinds.

' tion.

Figure 1 shows a vertical cross-section of an4 accumulator-cell. Fig. 2 is a view'in elevation of a negativ-*e plate with its covering. Fig. 3 is a side viewof the accumulator-casing mounted on a tube. Fig. 4 is a plan view of Fig. 3. Fig. 5 is a partial cross-section on line 5 `5 of Fig. 3, the cells being left in eleva- Fig. 6 is anv enlarged section of a detail. Fig. '7 is a section on line 7 7 of Fig. 8; and Fig. 8 is a plan of the cells and casing secured to a tube, the contents of the cells being omitted.

, and bottoms of said plates.

Each section of the accumulator has any desired number of plates, that shown in Fig. l having three positive zinc plates b, between which are arranged two negative plates a, of lead, perforated with holes, which holes are lled with pastelles of lead oxid. Each plate a is made of a checkered sheet of lead, as shown by dotted lines in Fig. 2. The plate may be reinforced by cross-ribs a' a2. These ribs are, however, not essential and are omitted in the cross-section, Fig. l. 'Each plate a is provided with a non-conductive.

sheet or covering d, which covers the sides The sheet d is perforated in the parts along the sides of plate a, the perforations being smaller than the oxid pastelles, so that should the latter become loosened from their plate they will be retained in the covering and Will not come in contact with the plates b. When plates a and said coverings are raised from cells e', such detached oxid will be removed Without the necessity of removing the liquid from the cell. Sheet d is of caoutchouc celluloid or of some material non-conductive of electricity and which will not be attacked by the liquid used. In order to keep the plates c Z) sufficiently apart, blocks or separators e g h are xed at suitable distances apart to covering d, Figs. l and 2, thus'leaving spaces e'.

vThe platecoverings are inclosed in the 6o boxes or cells 2'- of caoutchouc celluloid or other suitable material, the plates having the same height as the interior of box i. The plates are cut away at k, preferably at a corner, in order to give space for the connection of plates of the same sign within box 72.

To secure the accumulator upon a bicycle, several cells are inclosed in a light case m, of sheet-steel, fixed upon the lower horizontal tube g of the framing by bolts s, clamp r, 7o and cross-bar t. The case is closed by a cover l, of steel, traversed near its corners by four screw-threaded rods n, (see Figs. 3 and 6,) fixed to the case as tangential spokes are lixed in hubsthe heads of these rods being soldered to the case. The cover is secured byfournuts-m. Theaccumulator-terminals -I- extend through the cover, being insulated therefrom. .I ust below cover Z is a caoutchouc orsimilar sheet Z. The coverand 8o `said sheet not only close casing m, but also hermetically close the several cells t', and by pressing on the ends of the plates therein hold them in place. In charging the accumulator we may place 85 negative plates a and lead plates similar in size and shape to plates b in cells t', with a suitable liquid, as dilute sulfuric acid, and pass a current therethrough in the usual manner. Vhen the accumulator is charged, 9o the lead plates and the liquid may be withdrawn. When the cell is to be discharged, an electrolyte of dilute sulfuric acid will be placed in the cells and zinc plates b Will be substituted for the removed lead plates, since this gives a higher electromotive force and a diminution of weight to the discharging-accumulator.

In an electric accumulator, the combinaroo tion of plates a carrying active material, peragainst the end of said cell 1,' :md forming a formednon-Conductive coverings d surroundcover for it also. ing plates@ on theirsidesimdbottolns, Wliere- Signed at Paris, France, this 23d day of by when plat-es a and coverings d are lifted November, 1806.

5 out any active material which may have be- 4 come loosened from the plates will be taken sglfc' out also, an insulating-cell i inolosing said l n parts, in inclosing case m having a cover Z, Titnessesz a caoutchouc orsiinilar sheet on the lower side ABEL JULIEN, 1o of the Cover, said sheet and Cover pressing EDWARD l. MACLEAN. 

